1. A molecule (which may be a small polymer) that initiates the synthesis of a larger structure. SYN: starter. 2. A pheromone that causes a long-term physiologic change.

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prim·er 'prī-mər n a molecule (as a short strand of RNA or DNA) whose presence is required for formation of another molecule (as a longer chain of DNA)

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prim·er (prīmґər) 1. a substance that prepares for or facilitates the action of another. 2. in genetics, a short piece of DNA or RNA complementary to a given nucleic acid sequence; it acts as the nucleation point from which nucleotides are added to the growing chain, as in DNA replication, sequencing, or the polymerase chain reaction.

Medical dictionary. 2011.

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  • Primer — may refer to: Primer (album), a 1995 music album by the musical group Rockapella Primer (cosmetics) Primer (film), a 2004 feature film written and directed by Shane Carruth Primer (gasoline engine), a device on some petrol engines used to prime… …   Wikipedia

  • primer — (Apóc.). adj. primero. U. ante s.) ☛ V. día del primer móvil, el primer motor, potro de primer bocado, primer caballerizo del rey, primer espada, primer meridiano, primer ministro, primer movimiento, primer oficial, primer plano, primer pronto,… …   Diccionario de la lengua española

  • primer — 1. (pri mé) v. n. 1°   Terme de jeu de paume. Tenir la première place, c est à dire d un côté, être celui qui reçoit le service, et, de l autre côté, tenir la droite. Il prime fort bien. 2°   Fig. Avoir l avantage sur les autres. •   Dans les… …   Dictionnaire de la Langue Française d'Émile Littré

  • Primer — Prim er, n. [Originally, the book read at prime, the first canonical hour. LL. primae liber. See {Prime}, n., 4.] 1. Originally, a small prayer book for church service, containing the little office of the Virgin Mary; also, a work of elementary… …   The Collaborative International Dictionary of English

  • Primer — Prim er, a. [OF. primer, primier, premier, F. premier. See {Premier}.] First; original; primary. [Obs.] The primer English kings. Drayton. [1913 Webster] {Primer fine} (O. Eng. Law), a fine due to the king on the writ or commencement of a suit by …   The Collaborative International Dictionary of English

  • prímer — prímer, ser prímer expr. tener primera opción, ser el primero. ❙ «...y con ansiedad en el rostro exclamaron casi al tiempo: ¡Prime!» Eloy Arenas, Los vecinos de mis vecinos son mis vecinos. ❙ ▄▀ «Para el postre yo soy prímer.» ❘ de primero.… …   Diccionario del Argot "El Sohez"

  • primer — Primer. v. n. Tenir la premiere place. Il ne se dit au propre qu au jeu de paulme, en parlant de celuy qui du costé du service tire le premier coup, & de celuy qui tient la droite de l autre costé. Il est accoustumé à primer. Il se prend fig.… …   Dictionnaire de l'Académie française

  • primer — Ⅰ. primer [1] ► NOUN ▪ a substance painted on a surface as a preparatory coat. Ⅱ. primer [2] ► NOUN ▪ a book providing a basic introduction to a subject or used for teaching reading. ORIGIN from Latin primarius liber primary book and pr …   English terms dictionary

  • primer — primer1 [prim′ər; ] Brit [ prī′mər] n. [ME prymer < ML primarius < L primus, first: see PRIME] 1. a simple book for teaching reading to beginners 2. a textbook giving the first principles of any subject 3. see GREAT PRIMER primer2 [prī …   English World dictionary

  • Primer — Prim er, n. One who, or that which, primes; specifically, an instrument or device for priming; esp., a cap, tube, or water containing percussion powder or other compound for igniting a charge of gunpowder. [1913 Webster] …   The Collaborative International Dictionary of English

  • primer — index hornbook Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

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